/*
 * 
 * 
 * 
 */

package com.haoxuer.discover.data.page;

import java.io.Serializable;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;

/**
 * 排序
 */
public class Order implements Serializable {

  private static final long serialVersionUID = -3078342809727773232L;

  /**
   * 方向
   */
  public enum Direction {

    /**
     * 递增
     */
    asc,

    /**
     * 递减
     */
    desc;

    /**
     * 从String中获取Direction
     *
     * @param value 值
     * @return String对应的Direction
     */
    public static Direction fromString(String value) {
      return Direction.valueOf(value.toLowerCase());
    }
  }

  /**
   * 默认方向
   */
  private static final Direction DEFAULT_DIRECTION = Direction.desc;

  /**
   * 属性
   */
  private String property;

  /**
   * 方向
   */
  private Direction direction = DEFAULT_DIRECTION;

  /**
   * 初始化一个新创建的Order对象
   */
  public Order() {
  }

  /**
   * @param property  属性
   * @param direction 方向
   */
  public Order(String property, Direction direction) {
    this.property = property;
    this.direction = direction;
  }

  /**
   * 返回递增排序
   *
   * @param property 属性
   * @return 递增排序
   */
  public static Order asc(String property) {
    return new Order(property, Direction.asc);
  }

  /**
   * 返回递减排序
   *
   * @param property 属性
   * @return 递减排序
   */
  public static Order desc(String property) {
    return new Order(property, Direction.desc);
  }

  /**
   * 获取属性
   *
   * @return 属性
   */
  public String getProperty() {
    return property;
  }

  /**
   * 设置属性
   *
   * @param property 属性
   */
  public void setProperty(String property) {
    this.property = property;
  }

  /**
   * 获取方向
   *
   * @return 方向
   */
  public Direction getDirection() {
    return direction;
  }

  /**
   * 设置方向
   *
   * @param direction 方向
   */
  public void setDirection(Direction direction) {
    this.direction = direction;
  }

  @Override
  public boolean equals(Object obj) {
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    if (this == obj) {
      return true;
    }
    Order other = (Order) obj;
    return new EqualsBuilder().append(getProperty(), other.getProperty()).append(getDirection(), other.getDirection()).isEquals();
  }

  @Override
  public int hashCode() {
    return new HashCodeBuilder(17, 37).append(getProperty()).append(getDirection()).toHashCode();
  }

}